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Fig. 9. Average displacements, d, of normal and LM609-perturbed primordial endothelial cells as a function of the length of time interval, ${tau}$ . Each curve is calculated from the trajectories of a least 40 PECs within a lateral area from each of three normal (QH1 only), three anti- ${alpha}$ v (QH1 plus anti- ${alpha}$ v) and three LM609-injected embryos (QH1 plus LM609). The form of the d( ${tau}$ ) curve is highly characteristic for the underlying trajectories. As the plot with logarithmic scales (inset) demonstrates, the cells motility is superdiffusive and persistent (slope larger than 0.5). Blocking of the ${alpha}$ vß3 integrins results in a 40% reduction in the average displacements.

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